Question

The diameter is { ? }

cm.
r = 5.4 cm
The circumference in terms of pi { ? } is
cm.
Using 3.14 for pi , the approximate circumference of the
circle is { ? } cm. Find the answers for the “?”’s .

Answer 1

The diameter of the circle is 10.8 cm

The circumference of the circle is 33.9 cm

Step-by-step explanation:

Given that the radius of the circle is 5.4 cm

Diameter:

The diameter of the circle can be determined using the formula,

`d=2r`

where r = 5.4

Thus, we have,

`d=2(5.4)=10.8`

Thus, the diameter of the circle is 10.8 cm

Circumference:

The circumference of the circle can be determined using the formula,

`C=2\pi r`

Substituting
`\pi=3.14` and
`r=5.4`, we have,

`C=2(3.14)(5.4)`

`C=33.9`

Thus, the circumference of the circle is 33.9 cm